1 // Copyright 2014 Google Inc. All Rights Reserved. 2 // 3 // Use of this source code is governed by a BSD-style license 4 // that can be found in the COPYING file in the root of the source 5 // tree. An additional intellectual property rights grant can be found 6 // in the file PATENTS. All contributing project authors may 7 // be found in the AUTHORS file in the root of the source tree. 8 // ----------------------------------------------------------------------------- 9 // 10 // ARGB making functions (mips version). 11 // 12 // Author: Djordje Pesut (djordje.pesut (at) imgtec.com) 13 14 #include "./dsp.h" 15 16 #if defined(WEBP_USE_MIPS_DSP_R2) 17 18 static void PackARGB(const uint8_t* a, const uint8_t* r, const uint8_t* g, 19 const uint8_t* b, int len, uint32_t* out) { 20 int temp0, temp1, temp2, temp3, offset; 21 const int rest = len & 1; 22 const uint32_t* const loop_end = out + len - rest; 23 const int step = 4; 24 __asm__ volatile ( 25 "xor %[offset], %[offset], %[offset] \n\t" 26 "beq %[loop_end], %[out], 0f \n\t" 27 "2: \n\t" 28 "lbux %[temp0], %[offset](%[a]) \n\t" 29 "lbux %[temp1], %[offset](%[r]) \n\t" 30 "lbux %[temp2], %[offset](%[g]) \n\t" 31 "lbux %[temp3], %[offset](%[b]) \n\t" 32 "ins %[temp1], %[temp0], 16, 16 \n\t" 33 "ins %[temp3], %[temp2], 16, 16 \n\t" 34 "addiu %[out], %[out], 4 \n\t" 35 "precr.qb.ph %[temp0], %[temp1], %[temp3] \n\t" 36 "sw %[temp0], -4(%[out]) \n\t" 37 "addu %[offset], %[offset], %[step] \n\t" 38 "bne %[loop_end], %[out], 2b \n\t" 39 "0: \n\t" 40 "beq %[rest], $zero, 1f \n\t" 41 "lbux %[temp0], %[offset](%[a]) \n\t" 42 "lbux %[temp1], %[offset](%[r]) \n\t" 43 "lbux %[temp2], %[offset](%[g]) \n\t" 44 "lbux %[temp3], %[offset](%[b]) \n\t" 45 "ins %[temp1], %[temp0], 16, 16 \n\t" 46 "ins %[temp3], %[temp2], 16, 16 \n\t" 47 "precr.qb.ph %[temp0], %[temp1], %[temp3] \n\t" 48 "sw %[temp0], 0(%[out]) \n\t" 49 "1: \n\t" 50 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), 51 [temp3]"=&r"(temp3), [offset]"=&r"(offset), [out]"+&r"(out) 52 : [a]"r"(a), [r]"r"(r), [g]"r"(g), [b]"r"(b), [step]"r"(step), 53 [loop_end]"r"(loop_end), [rest]"r"(rest) 54 : "memory" 55 ); 56 } 57 58 static void PackRGB(const uint8_t* r, const uint8_t* g, const uint8_t* b, 59 int len, int step, uint32_t* out) { 60 int temp0, temp1, temp2, offset; 61 const int rest = len & 1; 62 const int a = 0xff; 63 const uint32_t* const loop_end = out + len - rest; 64 __asm__ volatile ( 65 "xor %[offset], %[offset], %[offset] \n\t" 66 "beq %[loop_end], %[out], 0f \n\t" 67 "2: \n\t" 68 "lbux %[temp0], %[offset](%[r]) \n\t" 69 "lbux %[temp1], %[offset](%[g]) \n\t" 70 "lbux %[temp2], %[offset](%[b]) \n\t" 71 "ins %[temp0], %[a], 16, 16 \n\t" 72 "ins %[temp2], %[temp1], 16, 16 \n\t" 73 "addiu %[out], %[out], 4 \n\t" 74 "precr.qb.ph %[temp0], %[temp0], %[temp2] \n\t" 75 "sw %[temp0], -4(%[out]) \n\t" 76 "addu %[offset], %[offset], %[step] \n\t" 77 "bne %[loop_end], %[out], 2b \n\t" 78 "0: \n\t" 79 "beq %[rest], $zero, 1f \n\t" 80 "lbux %[temp0], %[offset](%[r]) \n\t" 81 "lbux %[temp1], %[offset](%[g]) \n\t" 82 "lbux %[temp2], %[offset](%[b]) \n\t" 83 "ins %[temp0], %[a], 16, 16 \n\t" 84 "ins %[temp2], %[temp1], 16, 16 \n\t" 85 "precr.qb.ph %[temp0], %[temp0], %[temp2] \n\t" 86 "sw %[temp0], 0(%[out]) \n\t" 87 "1: \n\t" 88 : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1), [temp2]"=&r"(temp2), 89 [offset]"=&r"(offset), [out]"+&r"(out) 90 : [a]"r"(a), [r]"r"(r), [g]"r"(g), [b]"r"(b), [step]"r"(step), 91 [loop_end]"r"(loop_end), [rest]"r"(rest) 92 : "memory" 93 ); 94 } 95 96 //------------------------------------------------------------------------------ 97 // Entry point 98 99 extern void VP8EncDspARGBInitMIPSdspR2(void); 100 101 WEBP_TSAN_IGNORE_FUNCTION void VP8EncDspARGBInitMIPSdspR2(void) { 102 VP8PackARGB = PackARGB; 103 VP8PackRGB = PackRGB; 104 } 105 106 #else // !WEBP_USE_MIPS_DSP_R2 107 108 WEBP_DSP_INIT_STUB(VP8EncDspARGBInitMIPSdspR2) 109 110 #endif // WEBP_USE_MIPS_DSP_R2 111
